| Webb Property Holdings Ltd. | Real estate | 2017 |
| Webell Ltd | Wholesale & retail | 2021 |
| Webgt Ltd | Transport & logistics | 2025 |
| Weblaunch Limited | Information & communication | 2009 |
| Weblix Ltd | Wholesale & retail | 2025 |
| Webull Ltd | Construction | 2021 |
| Wecan Consultant Ltd | Wholesale & retail | 2020 |
| Wecan Investments Ltd | Real estate | 2025 |
| Wedgwood Place (Cobham) Management Company Limited | Households | 1998 |
| Welcome Cares Home Ltd | Health & social care | 2012 |
| Welcome Residential Care Limited | Health & social care | 2013 |
| Welcome Rides Ltd | Transport & logistics | 2021 |
| Welding Exotic Materials Ltd | Manufacturing | 2017 |
| Wellcare Help Ltd | Administrative & support | 2026 |
| Wellcome Care Homes Ltd | Health & social care | 2013 |
| Wellness Management (London) Limited | Other services | 2018 |
| West Court Management Consultants Limited | Real estate | 2019 |
| West END Driving School Limited | Education | 2023 |
| West London Bookkeepers Ltd | Professional & scientific | 2022 |
| West London Business Ltd | Other services | 1994 |
| West London Car Hire Limited | Transport & logistics | 2018 |
| West London Car Motors Limited | Wholesale & retail | 2023 |
| West London Cars Centre Ltd | Professional & scientific | 2019 |
| West London Construction Ltd | Construction | 2019 |
| West London Corporation Limited | Hospitality | 2023 |
| West London Decoration Limited | Construction | 2025 |
| West London Environmental Ltd | Other services | 2017 |
| West London Motor Group Ltd | Wholesale & retail | 2026 |
| West London Motors Ltd | Wholesale & retail | 2017 |
| West London One Stop Services Ltd | Wholesale & retail | 2024 |
| West London PCO Rentals Limited | Administrative & support | 2017 |
| West London Professionals Ltd | Administrative & support | 2023 |
| West London Scaffolding Ltd | Construction | 2019 |
| West London Taxis Ltd | Transport & logistics | 2026 |
| West PEN Property Limited | Real estate | 2026 |
| West Sunderland Investments Limited | Construction | 2016 |
| West TEN Properties (UK) Limited | Real estate | 2006 |
| Westdene Services Limited | Construction | 2016 |
| Westdrayton Motors Limited | Wholesale & retail | 2023 |
| Westend Trading PVT Ltd | Transport & logistics | 2023 |
| Western Executive Coaches Ltd | Transport & logistics | 2026 |
| Western Timber Merchants Limited | Wholesale & retail | 2018 |
| Westford Global Trade Ltd | Wholesale & retail | 2026 |
| Westgate Resources Limited | Real estate | 2024 |
| Westland Building Services Ltd | Construction | 2023 |
| Westminster Industrial Invest Ltd | Real estate | 2022 |
| Westridge Accountants Limited | Professional & scientific | 2010 |
| Westside Contractors Ltd | Construction | 2023 |
| Westside Real Estate Ltd | Real estate | 2019 |
| Westside Used Cars Ltd | Wholesale & retail | 2024 |
| Westvale Property Management Ltd | Real estate | 2025 |
| Westward Construction Ltd | Construction | 2006 |
| Westway Design and Build Ltd | Construction | 2018 |
| Westway Roofing Ltd | Construction | 2020 |
| WFA Sales Ltd | Wholesale & retail | 2024 |
| Wheatlands Properties Limited | Real estate | 2017 |
| Wheel GET YOU There Limited | Transport & logistics | 2002 |
| Wheels Ride Ltd | Transport & logistics | 2025 |
| Wheelsanywhere Ltd | Wholesale & retail | 2025 |
| Which PAD UK Ltd | Information & communication | 2023 |
| Whisper Products Limited | Wholesale & retail | 2017 |
| Whispering Ventures Ltd | Administrative & support | 2021 |
| White Bear Holding Company Ltd | Financial services | 2025 |
| White Feathers Construction Ltd | Construction | 2025 |
| White Lions London Ltd | Professional & scientific | 2023 |
| White Moose Ltd | Transport & logistics | 2022 |
| White Phase Ltd | Information & communication | 2024 |
| White Tiger Builder's Ltd | Construction | 2021 |
| White Tiger Security & Electrics Ltd | Construction | 2014 |
| White Titan Export Ltd | Wholesale & retail | 2025 |
| White Tree Project Ltd | Construction | 2019 |
| Whitfield Properties Limited | Real estate | 2014 |
| Whitley Wood Properties Ltd | Real estate | 2021 |
| Whizz Tech Trading Ltd | Wholesale & retail | 2025 |
| Wholesale Shamurey Limited | Wholesale & retail | 2023 |
| Whytecroft Ford Ltd | Other services | 2013 |
| WI Systems Ltd | Information & communication | 2012 |
| Wick'D Distribution Ltd | Wholesale & retail | 2024 |
| Wicked Car Detailing Ltd | Administrative & support | 2022 |
| Wifi-Sectechnologies Limited | Information & communication | 2017 |
| Wigmore Chauffeurs Ltd | Transport & logistics | 2022 |
| Wilkins Holdings Limited | Administrative & support | 2018 |
| William Smythe Lettings Ltd | Real estate | 2023 |
| WILLIAMSON86 Group Ltd | Hospitality | 2025 |
| Willow Close Property Management Limited | Extraterritorial | 2005 |
| Willow Solicitors Limited | Professional & scientific | 2019 |
| Willow Tree Childcare Ltd | Health & social care | 2020 |
| Willowbase Limited | Manufacturing | 1991 |
| Wimborne Heights Limited | Real estate | 2019 |
| Windermere Control Systems Limited | Construction | 2004 |
| Windmill Courier Express Limited | Transport & logistics | 2017 |
| Windmill Freehold Ltd | Real estate | 2024 |
| Wine After 9 Ltd | Other services | 2022 |
| Wings Auto Trade Ltd | Wholesale & retail | 2025 |
| Wings Wholesale Ltd | Wholesale & retail | 2023 |
| Winning Hands Massage Limited | Other services | 2013 |
| Wipflow Ltd | Information & communication | 2022 |
| Wipsoft Ltd | Information & communication | 2019 |
| Wisbech Business Park Limited | Real estate | 2023 |
| Wise Pack Removals Ltd | Transport & logistics | 2026 |